The Met Office has issued a yellow weather warning for snow in Pembrokeshire on Tuesday and Thursday.

Between just past midnight tomorrow (Monday) and 11.55pm on Tuesday snow showers or longer periods of snow are expected along with very low temperatures.

The office warns that there is the potential for travel delays on roads in Pembrokeshire as well as delays or cancellations to rail travel.

Rural communities could become cut off and power cuts may occur. Other services, such as mobile phones, could be affected.

A similar warning is in place for Thursday. Low temperatures of between -4 and -1 are expected but it will feel like -12 to -8 because of the wind chill.

Between midday and midnight on Thursday (St Davids Day) the Met office says there is potential for a spell of heavy snow, accompanied by strong winds, to move slowly north.

There is a small chance that long delays and cancellations on bus, rail and air travel could occur. There also a slight chance that roads may become blocked by deep snow, with stranded vehicles and passengers. There is a small chance that long interruptions to power supplies and other services such as telephones, may occur.

The very cold spell of weather originating from , known as the Beast from the East, is expected to hit UK shores tomorrow (Monday), with temperatures plunging.

The cold is expected to last at least a week, bringing widespread overnight frost - dipping well below zero in rural areas - and the potential for snow, which will be heavy in places.

Public Health Wales is advising members of the public to look out for friends and family who may be vulnerable to the cold as a wintry spell is set to hit Wales.

Every winter thousands of people fall ill and many die because of exposure to cold both in the home and while outdoors.

Those most at-risk include older people, very young children and those with conditions like heart and lung disease.

Huw Brunt, Lead Consultant in Environmental Health Protection for Public Health Wales, said: “We are advising members of the public to be vigilant, and take special care with friends and family who may be vulnerable to the cold. Ensure they have access to warm food and drinks and are managing to heat their homes adequately.

“Avoid exposing yourself to cold or icy outdoor conditions if you are at a higher risk of cold related illness or falls. And if you are fit and able, discuss with friends and neighbours about clearing snow and ice from in front of your house and public walkways nearby.”

Other key advice during the cold weather includes: • Try to maintain indoor temperatures to at least 18°C, particularly if you are not mobile, have long term illness or are 65 or over.

• Stay tuned for weather forecasts, ensure you are stocked with food and medications in advance, have deliveries or ask a friend to help.

• Take weather into account when planning your activity over the following days • Seek entitlements and benefits such as Winter Fuel Payments and Cold Weather Payments, which are available to some.

Cold weather can pose serious population health risks, causing ‘excess’ deaths in winter compared with the rest of the year.

Cold weather may generate associated morbidity such as hypothermia, falls and injuries, heart attacks, strokes, respiratory diseases and flu. Indirect effects of cold include mental health illnesses such as depression, and carbon monoxide poisoning from poorly maintained or poorly ventilated boilers, cooking and heating appliances.

More deaths occur every winter in the UK than in the summer due to a wide range of causes including cold weather, influenza and other respiratory infections.

Huw Brunt said: “The flu vaccination is the best protection against flu and it’s really important to have it if you are eligible. If we all keep a close eye out for each other over the coming months hopefully we’ll all be able to stay well this winter.

“Most of us are well used to winter in this country so we know what to do to protect our health before and during cold spells. But there are people who may not take precautions and who are at a very real risk.”

For more information, see the Public Health Wales cold weather pages